525261761 has 2 divisors, whose sum is σ = 525261762. Its totient is φ = 525261760.

The previous prime is 525261749. The next prime is 525261797. The reversal of 525261761 is 167162525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448804225 + 76457536 = 21185^2 + 8744^2 .

It is a cyclic number.

It is not a de Polignac number, because 525261761 - 2⁶ = 525261697 is a prime.

It is a super-2 number, since 2×525261761² = 551799835137642242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (525261721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262630880 + 262630881.

It is an arithmetic number, because the mean of its divisors is an integer number (262630881).

Almost surely, 2^525261761 is an apocalyptic number.

It is an amenable number.

525261761 is a deficient number, since it is larger than the sum of its proper divisors (1).

525261761 is an equidigital number, since it uses as much as digits as its factorization.

525261761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 35.

The square root of 525261761 is about 22918.5898562717. The cubic root of 525261761 is about 806.8483746074.

The spelling of 525261761 in words is "five hundred twenty-five million, two hundred sixty-one thousand, seven hundred sixty-one".